multidim_array.c

#include <stdio.h>
#define ROWS 3
#define COLUMNS 4

int main(){
    /*
    The general pattern for declaration of 2d array:
    data_type var_name[num_rows][num_columns] where 
        - data_type is a valid data type in C language
        - var_name is the name of the variable
    */
    int twoD_arr[ROWS][COLUMNS]; /* declaration without initialization*/

    /*Initialization*/
    /*First row: values 0 through 3*/
    /*Second row: values 4 through 7*/
    /*Third row: values 8 through 11*/
    int twoD_arr2[ROWS][COLUMNS] = {0,1,2,3,4,5,6,7,8,9,10,11}; 

    /*Clearer way to initialize*/
    int twoD_arr3[ROWS][COLUMNS] = {{0,1,2,3}, {4,5,6,7}, {8,9,10,11}};

    /*Accessing the elements in two dimensional array*/
    for (short i = 0; i < ROWS; i++){
        for (short j = 0; j < COLUMNS; j++){
            printf("twoD_arr3[%d][%d] = %d\n", i, j, twoD_arr3[i][j]);
        }
    }

    /*series of 3 two dimensional arrays*/
    int threeD_arr3[3][ROWS][COLUMNS] = {
        {{0,1,2,3}, {4,5,6,7}, {8,9,10,11}},
        {{0,-1,-2,-3}, {-4,-5,-6,-7}, {-8,-9,-10,-11}},
        {{2,4,6,8}, {-2,-4,-6,-8}, {12,13,14,15}}
        };

    for (short i = 0; i < 3; i++){
        for (short j = 0; j < ROWS; j++){
            for (short k = 0; k < COLUMNS; k++){
                printf("threeD_arr3[%d][%d][%d] = %d\n", i,j,k, threeD_arr3[i][j][k]);
            }
        }
    }

    return 0;
}